Sectional sofa



FIG. 1 is a perspective view showing my new design;

FIG. 2 is a top plan view of the design;

FIG. 3 is a back side view of the design, as viewed from top to bottom with respect to FIG. 2;

FIG. 4 is a left side view of the design, as viewed from left to right with respect to FIG. 2;

FIG. 5 is a front side view of the design, as viewed from bottom to top with respect to FIG. 2; and,

FIG. 6 is a right side view of the design, as viewed from right to left with respect to FIG. 2. 

The ornamental design for a sectional sofa, as shown and described. 